Crocodiles are mainly killed by poachers for: 

The right answer is skin.

Concept:

• Poaching is an illegal hunting process.
• Poachers are illegitimate hunters who kill wild animals for their different body parts.
• These are some examples of animals that are killed for poaching: Crocodiles, rhinos, elephants, lions, and deer.

Explanation:

• Every year, one core crocodile is killed for poaching.
• All the body parts of crocodiles are sold on the black market illegally.
• They were mainly killed for their skin.
• These skins are mainly used for luxury bags, belts, shoes, wallets, and upholstery.

So, crocodiles are mainly killed by poachers for their skin.

Additional Information  Horns

• Black rhinos and white rhinos are mainly killed by poachers for their horns.
• These horns are used for medicine, upholstery, and good luck.

Teeth

• Every year, 20,000 elephants are killed for their teeth or tusks.
• It is used for piano keys, ornaments, artefacts, etc.

Scent

• Civet cats, beavers, and musk deer are killed for their essence or scent.
• It is used for making different types of perfume.